How to Sell What You Build
Mar 2026·8 min read
We won first place at the AWS x Datadog x Anthropic Hackathon. Our code wasn't the best in the room. Here's what actually won.
BuildingHackathonAI Security
Lang Gui
I'm Lang, a Forward Deployed Engineer at Galatiq. I ship AI-powered products from 0→1 — 10 apps in 10 weeks, from a winning AWS hackathon automated red-teaming platform to voice-to-PR agents.
BU Computer Engineering '25, Technology Innovation concentration. Ex-Cadence Design Systems.
Building for today's problems. Architecting for tomorrow's.
Experience
Galatiq
Forward Deployed Engineer
April 2026 - Present · Austin, TX
EasyBee AI
AI Engineer
July 2025 - March 2026 · San Francisco, CA
- •Built LangGraph supervisor agent with 3 sub-agents → reduced cold-start latency from 5s to 150ms
- •Production RAG pipeline with Pinecone + GPT-4o → 40% improvement in booking conversion
- •Deployed containerized AI system with Docker + GitHub Actions CI/CD
Cadence Design Systems
Machine Learning Engineering Intern
May 2024 - Aug 2024 · Austin, TX
- •Led POC for thermal modeling feature → validated 5% performance gains
- •Built 3D visualization tool for non-technical stakeholders
- •Automated 500GB data pipeline → saved 8 hours/week of manual analysis
Terrier Motorsports
GLV Team Lead
2023 - 2024 · Boston, MA
- •Led 5-engineer team to deliver 3 embedded subsystems using C++ and CAN bus
- •Reduced input latency from 120ms to 72ms → completed 1 week ahead of deadline
Human Computer Interaction Lab
Research Assistant
Feb 2023 - July 2023 · University of Sydney
- •Built Python models analyzing smartwatch data from 200+ users → 75% churn prediction accuracy
- •Identified UI friction points → 15% engagement improvement
Selected Works
🚀 Top PicksAWS × DatadogPython
Crimson — AWS × Datadog Hackathon Winner
Automated red-teaming platform that discovers vulnerabilities in LLM-based agent systems. Four-stage multi-agent pipeline (Recon → Plan → Attack → Report) built on AWS Strands Agents + Bedrock probes target agents across 6 attack categories including prompt injection, secret exfiltration, and policy bypass. Features Neo4j attack surface visualization, Datadog trace deep-linking, and severity-rated vulnerability reports with actionable remediation steps.
week7#10weeks10appsPython
AdFlow
AI-powered video ad generator that transforms any product URL into professional short-form video advertisements in under 60 seconds. Features Claude Agent SDK orchestration, dual video providers (FreePik WAN 2.6 & Kie.ai Veo 3), intelligent product metadata extraction, and a FastAPI dashboard with real-time job tracking.
week6#10weeks10appsChrome Extension
WeRead
AI-powered Chrome extension that reduces article reading time by 12 min on average. Full-stack product with Chrome Extension (MV3), 7 serverless API endpoints, Stripe subscriptions, and Next.js marketing site. Features parallel AI processing pipeline (4 concurrent LLM calls in 3-5s), Google OAuth, and Notion-inspired UI with dual reading modes.